670b83d458bceb92123155b5b47a39b9d24e3266vboxsync/* $Id$ */
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync/** @file
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * Stubs for libasound.
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync */
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync/*
e64031e20c39650a7bc902a3e1aba613b9415deevboxsync * Copyright (C) 2006-2010 Oracle Corporation
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync *
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * available from http://www.virtualbox.org. This file is free software;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * you can redistribute it and/or modify it under the terms of the GNU
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * General Public License (GPL) as published by the Free Software
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync */
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync
f41e2072ec8320014565f76f4905e47f80b17262vboxsync#include <iprt/assert.h>
f41e2072ec8320014565f76f4905e47f80b17262vboxsync#include <iprt/ldr.h>
f41e2072ec8320014565f76f4905e47f80b17262vboxsync#define LOG_GROUP LOG_GROUP_DEV_AUDIO
f41e2072ec8320014565f76f4905e47f80b17262vboxsync#include <VBox/log.h>
f41e2072ec8320014565f76f4905e47f80b17262vboxsync#include <VBox/err.h>
f41e2072ec8320014565f76f4905e47f80b17262vboxsync
f41e2072ec8320014565f76f4905e47f80b17262vboxsync#include <alsa/asoundlib.h>
f41e2072ec8320014565f76f4905e47f80b17262vboxsync
f41e2072ec8320014565f76f4905e47f80b17262vboxsync#include "alsa_stubs.h"
f41e2072ec8320014565f76f4905e47f80b17262vboxsync
f41e2072ec8320014565f76f4905e47f80b17262vboxsync#define VBOX_ALSA_LIB "libasound.so.2"
f41e2072ec8320014565f76f4905e47f80b17262vboxsync
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync#define PROXY_STUB(function, rettype, signature, shortsig) \
670b83d458bceb92123155b5b47a39b9d24e3266vboxsync static rettype (*pfn_ ## function) signature; \
670b83d458bceb92123155b5b47a39b9d24e3266vboxsync \
820e4bc68518ef74f801cc055cb6d1522b3eddf4vboxsync rettype VBox_##function signature; \
820e4bc68518ef74f801cc055cb6d1522b3eddf4vboxsync rettype VBox_##function signature \
670b83d458bceb92123155b5b47a39b9d24e3266vboxsync { \
670b83d458bceb92123155b5b47a39b9d24e3266vboxsync return pfn_ ## function shortsig; \
670b83d458bceb92123155b5b47a39b9d24e3266vboxsync }
f41e2072ec8320014565f76f4905e47f80b17262vboxsync
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_any, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params))
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsyncPROXY_STUB(snd_pcm_close, int, (snd_pcm_t *pcm), (pcm))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_avail_update, snd_pcm_sframes_t, (snd_pcm_t *pcm),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_set_channels_near, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params, val))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_set_period_time_near, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params, val, dir))
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsyncPROXY_STUB(snd_pcm_prepare, int, (snd_pcm_t *pcm), (pcm))
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsyncPROXY_STUB(snd_pcm_sw_params_sizeof, size_t, (void), ())
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_set_period_size_near, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params, val, dir))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_get_period_size, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (params, frames, dir))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params))
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsyncPROXY_STUB(snd_pcm_hw_params_sizeof, size_t, (void), ())
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsyncPROXY_STUB(snd_pcm_state, snd_pcm_state_t, (snd_pcm_t *pcm), (pcm))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_open, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t **pcm, const char *name, snd_pcm_stream_t stream, int mode),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, name, stream, mode))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_lib_error_set_handler, int, (snd_lib_error_handler_t handler),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (handler))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_sw_params, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_sw_params_t *params),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_get_period_size_min, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (params, frames, dir))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_writei, snd_pcm_sframes_t,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, buffer, size))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_readi, snd_pcm_sframes_t,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, buffer, size))
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsyncPROXY_STUB(snd_strerror, const char *, (int errnum), (errnum))
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsyncPROXY_STUB(snd_pcm_drop, int, (snd_pcm_t *pcm), (pcm))
da34f630cce680921b71c5f024533113106d4f04vboxsyncPROXY_STUB(snd_pcm_resume, int, (snd_pcm_t *pcm), (pcm))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_get_buffer_size, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (params, val))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_set_rate_near, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params, val, dir))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_set_access, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params, _access))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_set_buffer_time_near, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params, val, dir))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_set_buffer_size_near, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params, val))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_get_buffer_size_min, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (params, val))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_hw_params_set_format, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params, val))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_sw_params_current, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_sw_params_t *params),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params))
f41e2072ec8320014565f76f4905e47f80b17262vboxsyncPROXY_STUB(snd_pcm_sw_params_set_start_threshold, int,
f41e2072ec8320014565f76f4905e47f80b17262vboxsync (snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync (pcm, params, val))
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsynctypedef struct
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync{
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync const char *name;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync void (**fn)(void);
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync} SHARED_FUNC;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync
670b83d458bceb92123155b5b47a39b9d24e3266vboxsync#define ELEMENT(function) { #function , (void (**)(void)) & pfn_ ## function }
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsyncstatic SHARED_FUNC SharedFuncs[] =
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync{
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_any),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_close),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_avail_update),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_set_channels_near),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_set_period_time_near),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_prepare),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_sw_params_sizeof),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_set_period_size_near),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_get_period_size),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_sizeof),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_state),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_open),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_lib_error_set_handler),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_sw_params),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_get_period_size_min),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_writei),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_readi),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_strerror),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_drop),
da34f630cce680921b71c5f024533113106d4f04vboxsync ELEMENT(snd_pcm_resume),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_get_buffer_size),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_set_rate_near),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_set_access),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_set_buffer_time_near),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_set_buffer_size_near),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_get_buffer_size_min),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_hw_params_set_format),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_sw_params_current),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync ELEMENT(snd_pcm_sw_params_set_start_threshold),
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync};
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync#undef ELEMENT
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync/**
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * Try to dynamically load the ALSA libraries. This function is not
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * thread-safe, and should be called before attempting to use any of the
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * ALSA functions.
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync *
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync * @returns iprt status code
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync */
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsyncint audioLoadAlsaLib(void)
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync{
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync int rc = VINF_SUCCESS;
bb4f3dd0d8ecc97f91997777ede12ea2e56f42bbvboxsync unsigned i;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync static enum { NO = 0, YES, FAIL } isLibLoaded = NO;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync RTLDRMOD hLib;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync LogFlowFunc(("\n"));
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync /* If this is not NO then the function has obviously been called twice,
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync which is likely to be a bug. */
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync if (NO != isLibLoaded)
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync {
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync AssertMsgFailed(("isLibLoaded == %s\n", YES == isLibLoaded ? "YES" : "NO"));
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync return YES == isLibLoaded ? VINF_SUCCESS : VERR_NOT_SUPPORTED;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync }
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync isLibLoaded = FAIL;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync rc = RTLdrLoad(VBOX_ALSA_LIB, &hLib);
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync if (RT_FAILURE(rc))
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync {
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync LogRelFunc(("Failed to load library %s\n", VBOX_ALSA_LIB));
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync return rc;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync }
e8337e527775f93549a93be513bd5b4b9d658569vboxsync for (i=0; i<RT_ELEMENTS(SharedFuncs); i++)
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync {
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync rc = RTLdrGetSymbol(hLib, SharedFuncs[i].name, (void**)SharedFuncs[i].fn);
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync if (RT_FAILURE(rc))
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync return rc;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync }
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync isLibLoaded = YES;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync return rc;
261a4578c86ef14d89385dde78f0139b41a0cb8evboxsync}